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Search: Posts Made By: DrMarkR
Showing results 1 to 50 of 148
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Forum: Tandem Cycling
02-25-19, 08:50 PM
Replies: 33
Views: 10,615
Posted By DrMarkR

Ha! I certainly hope so....we'd love to ride...

Ha! I certainly hope so....we'd love to ride with the Florida gang!!
Forum: Tandem Cycling
02-24-19, 10:02 PM
Replies: 33
Views: 10,615
Posted By DrMarkR

My wife and I hosted the Tucson SOORTA event, and...

My wife and I hosted the Tucson SOORTA event, and we'd like to invite any tandem MTB riders out for next year. It's held the weekend of MLK, and we ride Fri-Mon. The past couple of years we've had...
Forum: Tandem Cycling
04-08-18, 11:40 PM
Replies: 339
Views: 192,225
Posted By DrMarkR

The Arai drag brake would sell for half of that...

The Arai drag brake would sell for half of that asking price....or more.

MR
Forum: Tandem Cycling
03-15-18, 01:23 AM
Replies: 10
Views: 5,528
Posted By DrMarkR

Our mid-90's T-50 (our first tandem) weighed...

Our mid-90's T-50 (our first tandem) weighed around 53 lbs. We moved from that, to a 1999 Santana Sovereign that weighed about 35 lbs. It was a stunning difference.

Depending on what your...
Forum: Tandem Cycling
07-22-17, 04:44 AM
Replies: 7
Views: 1,429
Posted By DrMarkR

I have two pairs of mtb shoes, sizes 3 and 4,...

I have two pairs of mtb shoes, sizes 3 and 4, that anyone can have for the price of the shipping. The 3's are Fly and the 4's are 661 (brand). Good condition.

"drmarkr" at the gmail place if...
Forum: Tandem Cycling
06-13-17, 09:22 PM
Replies: 8
Views: 1,549
Posted By DrMarkR

I recommend selling the bike and finding a...

I recommend selling the bike and finding a large/X-large that will fit you. You're not about to make that bike even remotely comfortable to ride.....and you clearly state that you intend to make...
Forum: Tandem Cycling
06-06-17, 12:12 AM
Replies: 14
Views: 3,708
Posted By DrMarkR

I have a nice rear wheel with cassette in 160...

I have a nice rear wheel with cassette in 160 spacing. Drmarkr at the gmail place if you want more info. Ill make you a good deal on the complete wheel...
Forum: Tandem Cycling
04-24-17, 10:57 PM
Replies: 17
Views: 4,769
Posted By DrMarkR

I have a complete wheel built for a Santana that...

I have a complete wheel built for a Santana that I'd sell for $300. Chris King hub, 10" rotor, 9sp 11-25 cassette, built on H Plus Son rim. Excellent condition. Could be a donor hub for your...
Forum: Tandem Cycling
02-28-17, 07:58 PM
Replies: 39
Views: 5,613
Posted By DrMarkR

This will get you guys (those that need it) a...

This will get you guys (those that need it) a little more up to speed on the MTB Tandem world...

Tandem Mountain Bikes - Mtbr.com (http://forums.mtbr.com/tandem-mountain-bikes/)

Better yet,...
Forum: Tandem Cycling
02-28-17, 12:12 PM
Replies: 28
Views: 7,952
Posted By DrMarkR

Robusta converted to DI2. FSA Gossamer...

Robusta converted to DI2.

FSA Gossamer crankset with FSA Fr Der hanger.

Removed the inner ring, installed both BB spacers to left side to position DI2 Der correctly. Works great as a...
Forum: Tandem Cycling
02-07-17, 11:48 PM
Replies: 8
Views: 2,546
Posted By DrMarkR

No....cold. Damn cold!

No....cold. Damn cold!
Forum: Tandem Cycling
02-06-17, 12:16 AM
Replies: 339
Views: 192,225
Posted By DrMarkR

$2200 Santana Team Al Tandem...

$2200

Santana Team Al Tandem (http://tucson.craigslist.org/bik/5987388266.html)

https://images.craigslist.org/00d0d_2MYBFn2RXjr_600x450.jpg
Forum: Tandem Cycling
12-16-16, 06:46 PM
Replies: 56
Views: 10,560
Posted By DrMarkR

We've used GP4000's (earlier models initially,...

We've used GP4000's (earlier models initially, current versions as they're been released) on our Robusta's for 15+ years.....after I had used them on my singles with great success. Very rare flats...
Forum: Tandem Cycling
11-13-16, 07:04 PM
Replies: 5
Views: 2,079
Posted By DrMarkR

The Santana is in the garage with the Robusta. ...

The Santana is in the garage with the Robusta. It's a very nice Team AL...these are the MTB machines! https://pbs.twimg.com/media/CxLzRmkUoAA7v4q.jpg
Forum: Tandem Cycling
11-07-16, 06:01 PM
Replies: 8
Views: 1,366
Posted By DrMarkR

Vehicles....'11 Mazda CX-9, '08 Wrangler JKU, '01...

Vehicles....'11 Mazda CX-9, '08 Wrangler JKU, '01 Silverado Ext Cab. Total value ~ $50k

Bicycles? Easily exceeds that....kinda scary when I think about it.
Forum: Tandem Cycling
10-27-16, 11:54 PM
Replies: 5
Views: 2,079
Posted By DrMarkR

2006-7 Santana Team AL. Excellent condition, ...

2006-7 Santana Team AL. Excellent condition, shade shifter paint. Price was too low to pass up, Rudy! I'll post pics when I finish going over it
Forum: Tandem Cycling
10-15-16, 08:35 PM
Replies: 5
Views: 4,294
Posted By DrMarkR

Yea, this is about the same. Definitely heavier...

Yea, this is about the same. Definitely heavier than the Robusta! The 650's are an issue, but more so in MTB tires than slicks, believe it or not. Good gravel tires at the 2.00 width, or narrower...
Forum: Tandem Cycling
10-15-16, 08:32 PM
Replies: 5
Views: 4,294
Posted By DrMarkR

May do so. I did price out a disc brake set up...

May do so. I did price out a disc brake set up for the rear from Mark J at Precision. On hold for now until we ride it a few months to make sure we're keeping it.
Forum: Tandem Cycling
10-14-16, 11:10 PM
Replies: 5
Views: 4,294
Posted By DrMarkR

We recently had the same inclination....I found...

We recently had the same inclination....I found this fairly well used Mocha on CL. Needed some love, for certain, but the frame has couplers and was in good shape. Snapped it up for $1k and then...
Forum: Tandem Cycling
10-14-16, 10:40 PM
Replies: 5
Views: 2,079
Posted By DrMarkR

Nice Santana FS in Tucson....

bought it myself...!
Forum: Tandem Cycling
09-17-16, 12:13 AM
Replies: 19
Views: 2,189
Posted By DrMarkR

Rudy, if you kept the old saddle, have you...

Rudy, if you kept the old saddle, have you considered recovering it?? I've recovered a number of our saddles and they're working out great....allows us to continue to use the Avocet O2's that Laura...
Forum: Tandem Cycling
07-11-16, 07:26 PM
Replies: 87
Views: 16,326
Posted By DrMarkR

With the charging port on the synchro unit, doing...

With the charging port on the synchro unit, doing so is extremely simple. And there's an icon on the display that shows level, as you likely know. Finally, battery life on our bikes (DA Di2,...
Forum: Tandem Cycling
07-11-16, 07:20 PM
Replies: 87
Views: 16,326
Posted By DrMarkR

What do you mean by semi-synchro??

What do you mean by semi-synchro??
Forum: Tandem Cycling
07-11-16, 07:18 PM
Replies: 17
Views: 9,881
Posted By DrMarkR

Bottom line is you'll need the BB's out to see...

Bottom line is you'll need the BB's out to see what's what. Let us know what you finally find in there...!
Forum: Tandem Cycling
07-10-16, 10:48 PM
Replies: 87
Views: 16,326
Posted By DrMarkR

I chuckle at everyone stating they think synchro...

I chuckle at everyone stating they think synchro "sucks" for road tandem, even though (unless I'm mistaken), not one person saying this has even ridden an XTR synchro bike.

Reminds me of the same...
Forum: Tandem Cycling
07-10-16, 09:04 PM
Replies: 22
Views: 3,242
Posted By DrMarkR

DMR Hinged Clamp | Chain Reaction Cycles...

DMR Hinged Clamp | Chain Reaction Cycles...
Forum: Tandem Cycling
07-10-16, 09:02 PM
Replies: 17
Views: 9,881
Posted By DrMarkR

They should be able to tell you exactly what's...

They should be able to tell you exactly what's behind the carbon.....!
Forum: Tandem Cycling
07-10-16, 09:00 PM
Replies: 25
Views: 6,356
Posted By DrMarkR

Great job.....that looks awesome! ...

Great job.....that looks awesome!




Just takes patience, eh?!?
Forum: Tandem Cycling
07-06-16, 12:36 PM
Replies: 22
Views: 3,242
Posted By DrMarkR

Quite a few options....a quick google search...

Quite a few options....a quick google search grabbed a bunch of hits. Try "clamp on water bottle mounts"

https://www.universalcycles.com/shopping/index.php?category=4893

Adding Water Bottle...
Forum: Tandem Cycling
07-05-16, 06:23 PM
Replies: 87
Views: 16,326
Posted By DrMarkR

We have this on our XTR Di2 setup on our Ventana...

We have this on our XTR Di2 setup on our Ventana ECDM. 2x11. Works very well, and I would think it would be even better received on the pavement?

I had assumed installing the synchro junction...
Forum: Tandem Cycling
07-05-16, 05:16 PM
Replies: 18
Views: 10,837
Posted By DrMarkR

New Old Stock....or Old Stock......$3800 for that...

New Old Stock....or Old Stock......$3800 for that tandem, USED, is ridiculous.
Forum: Tandem Cycling
07-05-16, 05:11 PM
Replies: 17
Views: 9,881
Posted By DrMarkR

How large is the window in your bottom bracket?? ...

How large is the window in your bottom bracket?? You aren't going to thread a very large piece of foam it it's a ~3/4" window, just large enough for the junction box to be inserted. Or, it could...
Forum: Tandem Cycling
07-05-16, 03:06 PM
Replies: 22
Views: 3,242
Posted By DrMarkR

These are for a seatpost, but others are made for...

These are for a seatpost, but others are made for different diameter tubing...


http://www.nordicgroup.us/cageboss/cagebossimages/seatpostclamp.jpg
Forum: Tandem Cycling
07-05-16, 02:55 PM
Replies: 17
Views: 9,881
Posted By DrMarkR

I've done 3 Di2 builds now....on all I used...

I've done 3 Di2 builds now....on all I used several small zip ties, which are similar to those that Shimano supplies with some build kits. The zip ties accomplish the same thing....place one ~every...
Forum: Tandem Cycling
04-01-16, 01:19 AM
Replies: 1
Views: 831
Posted By DrMarkR

Just curious.....how the heck can you...

Just curious.....how the heck can you climb/sprint out of the saddle when you're OOP.....???

Also, I learned the hard way when riding a quad with our sons, and forgetting how many sets of...
Forum: Tandem Cycling
02-24-16, 09:23 PM
Replies: 14
Views: 1,417
Posted By DrMarkR

On the XTR MTB build, I used the syncro shift...

On the XTR MTB build, I used the syncro shift unit (has 3 ports) for shifters and then entered the head tube very similar to the Robusta:

506267


Because the rear swingarm pivot prevents...
Forum: Tandem Cycling
02-24-16, 08:55 PM
Replies: 14
Views: 1,417
Posted By DrMarkR

I've done several Di2 conversions...one on a...

I've done several Di2 conversions...one on a custom single that was purpose built for Di2, a Robusta (non-coupled) conversion, and just recently a Ventana ECDM MTB tandem using XTR Di2.

Re: your...
Forum: Tandem Cycling
10-09-15, 09:32 PM
Replies: 50
Views: 5,512
Posted By DrMarkR

481796

481796
Forum: Tandem Cycling
10-09-15, 09:21 PM
Replies: 31
Views: 5,173
Posted By DrMarkR

Also, be aware that the 2x XTR Di2 front...

Also, be aware that the 2x XTR Di2 front derailleur only has a 10 tooth capacity!!
Forum: Tandem Cycling
10-09-15, 09:17 PM
Replies: 25
Views: 6,356
Posted By DrMarkR

I've never recovered one with the opening. I...

I've never recovered one with the opening. I suspect it would require an additional piece of leather to be sewn in for the opening?

Glad you liked them Paul!
Forum: Tandem Cycling
10-02-15, 02:33 PM
Replies: 25
Views: 6,356
Posted By DrMarkR

My apologies for some of the pics being too large...

My apologies for some of the pics being too large to use thumbnails....not sure why it worked on some, but not others....??
Forum: Tandem Cycling
10-02-15, 02:32 PM
Replies: 25
Views: 6,356
Posted By DrMarkR

Laying out the replacement leather... ...

Laying out the replacement leather...

https://lh3.googleusercontent.com/-6upsP6FgI5s/VfznGPz5BfI/AAAAAAAAstA/G2ni7eJenB4/s1152-Ic42/20150807_142454.jpg


480481

I then bolt it up to an old...
Forum: Tandem Cycling
10-02-15, 02:18 PM
Replies: 25
Views: 6,356
Posted By DrMarkR

First of all, thanks to PK for the no longer...

First of all, thanks to PK for the no longer being used O2 saddle he had available...it's in excellent shape and I won't be recovering that one (Did you get the my package, Paul???).

On to the...
Forum: Tandem Cycling
09-21-15, 12:00 AM
Replies: 25
Views: 4,380
Posted By DrMarkR

Just curious where you hit 70mph? You were...

Just curious where you hit 70mph? You were definitely spinning that 53-12 out......! :-)
Forum: Tandem Cycling
08-30-15, 11:42 PM
Replies: 32
Views: 4,580
Posted By DrMarkR

Link to said studies on pedal efficiency??

Link to said studies on pedal efficiency??
Forum: Tandem Cycling
08-19-15, 09:17 AM
Replies: 25
Views: 6,356
Posted By DrMarkR

Thanks....appreciate this. I'm still looking...

Thanks....appreciate this. I'm still looking for one or two of these saddles....

Mark Russell
Tucson
Forum: Tandem Cycling
08-16-15, 10:00 PM
Replies: 25
Views: 6,356
Posted By DrMarkR

Here is a pic: 471535 The small...

Here is a pic:

471535

The small retaining trims on the back edges are distinctive...seen better here:

471536
Forum: Tandem Cycling
08-07-15, 02:24 PM
Replies: 25
Views: 6,356
Posted By DrMarkR

I getting ready to do one....I'll take some...

I getting ready to do one....I'll take some photo's of the process....
Forum: Tandem Cycling
08-07-15, 02:01 PM
Replies: 28
Views: 6,181
Posted By DrMarkR

Very, very nice!! Is that a white zip tie...

Very, very nice!!

Is that a white zip tie on the captain's top tube?? Are those the pedals you guys run? I really like BB7's, even though they're not by any means sexy....it's damn nice to do...
Forum: Tandem Cycling
08-07-15, 01:53 PM
Replies: 25
Views: 6,356
Posted By DrMarkR

I do them myself. It's a bit time consuming to...

I do them myself. It's a bit time consuming to do it right, but with the right leather it works out great. THis is a pic of our MTB, both are Avocet O2's:

469775


And one of the white...
Showing results 1 to 50 of 148
 
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